package com.example.dao;

import com.example.pojo.Department;
import com.example.pojo.Employee;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;

//员工Dao
//@Repository //交给Spring托管
@Repository
public class EmployeeDao {
    //模拟数据库，初始化数据库
    private static Map<Integer, Employee> employees= null;
    @Autowired
    private DepartmentDao departmentDao;
    //员工有所属的
    static {
        employees = new HashMap<Integer, Employee>();//创建一个部门表
        employees.put(1001,new Employee(1001,"AA","1001@qq.com",1,new Department(101,"教学部")));
        employees.put(1002,new Employee(1002,"BB","1002@qq.com",1,new Department(102,"市场部")));
        employees.put(1003,new Employee(1003,"CC","1003@qq.com",0,new Department(103,"教研部")));
        employees.put(1004,new Employee(1004,"DD","1004@qq.com",1,new Department(104,"运营部")));
        employees.put(1005,new Employee(1005,"EE","1005@qq.com",0,new Department(105,"后勤部")));
    }
    //主键自增
    private static Integer initId = 1006;
    //增加一个员工
    public void save(Employee employee){
        if(employee.getId() == null){
            employee.setId(initId++);
        }
        employee.setDepartment(departmentDao.getDepartmentById(employee.getDepartment().getId()));

        employees.put(employee.getId(),employee);
    }

    //查询全部员工信息

    public Collection<Employee> getAll(){
        return employees.values();
    }

    //获得所有部门信息
    public Collection<Employee> getEmployees(){
        return employees.values();
    }

    //通过id得到员工数据
    public Employee getEmployeeById(Integer id){
        return employees.get(id);
    }

    //通过员工Id删除员工数据
    public void deleteEmployeeById(Integer id){
        employees.remove(id);
    }
}




















